Information Systems CS507 Assignment No.3 Solution 24th January 2014

Total Marks: 10

Due Date: 24-01-2014
Objective: To understand different techniques for system analysis and design.

Lectures Covered: 23 to 27
Instructions:
Please read the following instructions carefully before submitting assignment:

• Assignment should be submitted on VU-LMS on or before the due date.
• Assignment should be completed by your own efforts; it should not be copied from internet, handouts or books.
• Assignment should be in Microsoft Word File.
• Assignment sent via Email will not be accepted.
• If the submitted assignment does not open or file is corrupt, it will not be checked.

For any query about the assignment, contact at cs507@vu.edu.pk

BEST OF LUCK!
The given Flow Chart is the graphical representation for the functionality of an Automated Teller Machine (ATM) situated in a Bank.
The Functionality of ATM is given below:

1. Machine first displays a message “Welcome! Please enter the PIN code”.
2. It checks, whether the entered PIN code is valid or not?
3. In case, if the PIN code is valid, machine further asks for entering desired amount in range from “500 to 25000”. If PIN code is invalid, it displays a message “Invalid code, Try again” and then again navigates the user to the welcome screen. (Step1).
4. On Valid PIN Code, when the user enters the required amount, it checks, whether the amount is valid or not? If the amount is invalid then machine displays a message “An Error Occurred, Try Again” and navigates the user to the amount entering screen (Step 3).
5. If the amount is valid, it checks if the sufficient balance is available in the user account or not?
6. If there is sufficient balance available then transaction does occur and the machine displays a message “Transaction is Successful” and exits otherwise it displays a message “An Error Occurred, Try Again” and again navigates the user to amount entering screen (Step 3).

After analyzing the given flow chart, a system analyst found some problems in the flow chart and observed that some incorrect symbols have been used in the representation of various steps. You are required to mention the symbol numbers which have been used incorrectly and suggest the correct symbols which should be used against the incorrect symbols in the following table.

Note: No need to draw new flow chart with correct symbols, you are required to only fill the following table.                                                                      [10 Marks]

Symbol Number	Correct Symbol Name(Rectangle, Oval etc)